Disk harrow.



Patented Ju ly v4, I899. F. R. PACKHAM &. G. P. DATES.

D l S K H A R R 0 W.

(Application filed Feb. 4, 1899.)

4 Sheets-Sheet I,

(No Model.)

. Patented July 4, I899. F. R. PACKHAM & G. P. GATES.

DISK HABROW.

(Appl z nfildFb 4 1899) (No Model.) 4 Sheets-8heet 2,

MW 3513 attozmu M Patented July 4, I899. F. R. PACKHAM &. G. P. DATES.

D l S K H A R R 0 W.

(Appllcation filed Feb. 4, 1899.)

4 SheetsSheet 3 '.N0 Model.)

m: uomus PETERS co. PHOTO-LUNG" Patented July 4, I899. F. R. PACKHAM & G. P. DATES.

D I S K H A R R 0W.

(Application filed Fe b. 4, 1899.)

4 Sheets-Sheat 4 (No Model.)

UNITED STAT S PATENT OFFICE.

FRANK R. PAOKHAM AND GEORGE OATES, OF SPRINGFIELD, OHIO, ASSIGNORS TO THE SUPERIOR DRILL COMPANY, OF SAME PLACE.

DISKHARROW.

' srnorrrcAtrrolv forming al-t of Letters Patent No. 628,028, dated July 4, 1899. Application filed February 4, 1899. Serial No. 704,597. (No model.)

To all whom, it may concern.-

Be it known that we, FRANK R. PACKHAM and GEORGE P. OATES, citizens of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Disk Hat-rows, of which the following is a specification.

Our invention relates to improvements in disk barrows; and it relates particularly to improvements in the construction of disk harrows in a way that permits an independent movement of the disks.

One of the obj ectsin the constructions hereinafter shown consists in providing disk harrows, the disks of which can be operated independently and each of them movable vertically.

An additional feature is in providing means for regulating the depth of cultivation by carrying-wheels worked in connection with depressing-levers.

A further feature consists in cutting out the center space formed by the two series of disks in the manner hereinafter shown and described. Q

These objects are attained by the constructions shown in the accompanying drawings, in which Figure 1 is a rear view of a disk harrow embodying our invention. Fig. 2 is a side elevation of one of the disks and itsattachments. Fig. 3 is a detail perspective view of parts of the connections for the disk. Figs. 4 and 5 are detail views of one of the disks and its stem and lifting-arm. Fig. 6 isa detail view of one end of the drag-bar and scraper. Fig. 7 is a perspective view of the center cuttingdisk and attachment. Fig. 8 is a side elevation of the carrying-wheel,showin g the fender. Fig. 9 is a detail view of the scraper attached to the drag-bar.

Like parts are represented by similar letters of reference in the several views.

In the accompanying drawings the frame consists of the side bars 0, the front bar A, the rear bar B, and bed-rail z.

D represents the carrying-Wheels, r the supporting-axles for said carrying-wheels, and y the fender attached to the side 0 of the frame. The carrying-wheels D are mounted upon short axles 1", which are attached to the side I bars 0 and preferably also to the bed-rail z.

The disks are independently attached in series of six, more'or less, at the right and same number at the left side, near the front bar A of the, frame, and are pivoted in such manner that they may be easily raised or depressed. L is the lever, which, with the segment, is adapted to lift said disks free from the ground, and said parts are then carried and supported by said carrying-wheels D I). There are preferably two levers, each adapted to operate one series'of disks.

The drag-bar d is preferably formed at its front pivoted end with projecting loops, through which thedraft-bar d is extended, which in turn is pivotedto the side bars 0.

. Said drag-bar is preferably quarter-twisted,

and at its free end is attached to the disk I) on its convex or non-working side. Said dragbar is formed with a flange, with a hole thin the top thereof. The stem c, with a-hook or any well-known form of attachment, is adapted to be attached to the flange of each dragbar at (1 which stem, extending vertically, is connected to a liftingarm f, fastened to one of the rock-shafts e, which extend across the top of the frame and each of which is journaled at each end in'a suitable support on the bedrail. The free end r of saidarm f is formed in the shape of a yoke, andthere is pivoted 'in said yoke a supporter block W, through the center of which said stem e extends and is held in place by a pin e The levers L are attached to theright and left shaft .2, and the notches Z indicate the distance the lever is moved. The constructions are such that when the disk is lifted and the stem moves vertically the block or support 0* compensates for the movements of said lifting-arm and drag-bar on arcs of different circles. It is therefore clear that this relative arrangement of lifting-arms and the drag-bars preserves an almost verticaland direct position for the spring 6 and stem 6 in the several positions taken by the disks when working.

The disk is formed with a cup-shaped bearing-support a, with a trunnion a extending through the disk and the bolt 0. extending from the concave or working side of the disk through the trunnion a and the nut a to hold the bearing-support for said disk and a bar d by means of a bolt passing through the slot. Said scraper is further formed with an angular end, and by means of a stud 8', projecting from the drag-bar, its relative position to the disk may be maintained. Further protection from mud and obstructions, preventing the easy operation of the disks and attachments, is provided by a clod-hook d which is attached to thefree end of the dragbar and its upper end curved upwardly in such a way as to remove the clods and other obstructions from the working face and bearing of the disk, it being evident that the same effect may be produced by hooks attached to the rear bar B of the frame and extending downwardly and along the working face of each disk, and by turning the clodhooks in their bearings with hook down the fresh-plowed lands having clods can be further pulverized by engaging the turned-down hooks. The shield y extends downwardly from. the side G of the frame and is adapted to prevent clods and other things from obstructing the carrying-wheels.

In Fig. 7 is shown a disk I) for cutting out the center space usually left between the right and left hand series of disks. Said disk is. pivoted to the rear bar B by means of depending loops at and a bolt CH. The drag-bar is of the same shape as the other drag-bars. The lifting-arm is attached to its drag-bar (l in the same manner as in the other drag-bars, and said stem or arm is attached to a crank foot-lever e, which in lifting and depressing the link and draw-bar, when actuated to the full limit of its stroke, locks said link and draw-bar against further movement. In ordinary operation by pressing said lever the cutout disk will be pressed farther in the ground.

In operation the machine has many advantages over other forms of disk ha-rrows. The construction of the disks, axles for carryingwheels, and connections is such that any disk may be raised and held from the ground withoutinterfering with the operation of the machine and same can be done easily. A further resultof the construction shown is that in operation the ground is pulverized evenly by reason of the independent adjustment of the disks and the entire machine operated with little chance of the parts being obstructed.

Having thus described our invention, we claim 1. The combination of a series of disks, drag-bars attached to the convex side of the disks independently mounted, lifting-arms fastened to rock-shafts with pivoted blocks in their free endsQadapt-ed to raise and depress the disks, stems connecting the lifting-arms to said disks, said blocks being adapted to compensate for the movements of said dragbars and lifting-arms in arcs of difierent circles.

2. The combination of a pivoted drag-bar,- a disk attached on its convex side to said dragbar, a scraper with an angular end pivoted to the head of the drag-bar and a projection on the head of said drag'bar for maintaining the scraper in its relative position with the Working side of said disk.

3. In a disk harrow, the combination of a drag-bar, a disk pivoted to the drag-bar, a stem extending vertically from the drag-bar of the disk, a spring around said stem, a lifting-arm with its outer end formed with a pivoted block adapted to permit the stem to extend through said block, and means for raising and depressing said lifting-arm.

4. In a disk harrow the combination of a concave disk formed with a cup-shaped bearing-support with a trunnion extending through the opening in the center of said disk, a pivoted drag-bar having a bearing to fitover said trunnion, and means for connecting said disk through said trunnion to the bearingsupport of the drag-bar.

5. In a disk barrow, the combination of a drag-bar, a concave disk attached to the free end of said bar, a clod-hook extending upwardly from the top of the free end of thesaidbar and adapted to throw from the face of said disk clods and other obstructions.

6. In a disk barrow, the combination of a rock-shaft pivoted to the top of said frame, independently-mounted concave disks pivot ed near the front of said frame, lifting-arms jonrnaled on said shaft, stems attached to said disks and pivoted to said lifting-arms, and means for regulating the depth of cultivation of said disks.

7. In a disk barrow, the combination of right and left hand series of disksindependently mounted near the front of the frame, a single disk pivoted to the rear of said frame and at approximately the center thereof and adapted to cut out the center space between the right and left hand series of disks.

8. In a disk barrow, the combination of right and left hand series of disks independently mounted near the front of the frame and adapted to be lowered and raised, a single disk pivoted to the rear of said frame and at the center thereof, a stem and spring,a crank adapted to lift the disk and being self-locking in both directions when actuated to the full limit of its stroke in either direction. 9. In a disk harrow, the combination of a frame, independently-mounted disks, carryin g-wheels attached to the sides of said frame by short axles, and a shield extending from the sides of said frame in proximity to the said wheels and adapted to prevent clods from obstructing said wheels.

10. In a disk barrow, the combination of a drag-bar, a concave disk attached to the free end of said drag-bar, a clod-hook extending upwardly from the top of the free end of the said drag-bar adapted to throw from the disk clods and other obstructions and further adapted when turned in its bearing until the hook extends downwardly to pulverize fresh mud or similar obstructions.

11. In a disk barrow, the combination of right and left hand series of disks independently mounted near the front of the frame and adapted to be lowered and raised, a single disk pivoted at or near the center of the rear of said frame, stein and spring, f0ot= crank adapted to lift the disk, being selflooking in both directions and further adapted by pressure of the foot to regulate the depth of cultivation.

In testimony whereof we have hereunto set our hands this 6th day of January, A. D. 1899.

FRANK R. PACKHAM.

GEORGE P. OATES. Witnesses:

CHAS. I. WELoH, EARL G. WELCH. 

